Dimension 350mm(W)x99mm(H)x205mm(D) Suitable for Mini-ITX External 9.5mm/12.7mm slim slot-loading optical drive x 1 (replaceable with 3.5" HDD x 1 or 2.5" HDD x 2 or 120mm fan x 1) Internal 2.5" x 4 PSU SFX